SSL & HTTPS HELP CENTER
SSL Troubleshooting: Fix Certificate & HTTPS Errors
Find practical solutions to SSL certificate problems, HTTPS browser warnings, certificate expiration, and hostname mismatches. Use Hostingcone’s free tools and step-by-step guides to identify common SSL issues.
Check Your Website's SSL Certificate
Use Hostingcone’s free SSL Checker to inspect publicly presented certificate details, including expiration dates, issuer, hostname coverage, and validation results.
The checker samples one public address on port 443. It does not perform a complete security audit or inspect an origin certificate hidden behind a proxy or CDN. Different endpoints and client trust stores can produce different results.
Step-by-Step SSL Troubleshooting Guides
How to Fix “Your Connection Is Not Private” (Chrome, Edge & Safari)
Understand browser privacy warnings and learn how to troubleshoot common HTTPS certificate errors safely.
Read GuideHow to Check SSL Certificate Expiration and Prevent Website Downtime
Learn how to check expiration dates, diagnose renewal failures, and reduce certificate-related access problems.
Read GuideFree SSL vs. Paid SSL Certificates: What’s the Difference and Which Should You Choose?
Compare certificate options, validation types, support, and management features to choose the right solution.
Read GuideSSL Certificate Name Mismatch: Causes and How to Fix It
Learn why a certificate does not match the requested hostname and how to check SAN coverage, redirects, SNI, and the certificate your server presents.
Read GuideWhat SSL Problem Are You Experiencing?
Your Connection Is Not Private
Browser privacy warning: identify the reported certificate or connection error before changing settings.
SSL Certificate Expired
Check validity dates, device time, renewal, and whether the renewed certificate was deployed.
Certificate Not Trusted
Investigate the issuer and intermediate chain when the client cannot establish trust.
Certificate Name Mismatch
Compare the requested hostname with certificate SANs and the certificate the endpoint serves.
HTTPS Not Working
Narrow down TLS connection and server configuration problems using the warning details and endpoint checks.
Choosing an SSL Certificate
Compare free and commercial options, validation requirements, support, and operational management.
SSL Certificates and HTTPS Explained
HTTPS protects HTTP traffic using TLS. “SSL certificate” remains the common product name, although modern secure connections use TLS rather than obsolete SSL protocols. A certificate helps clients authenticate the requested hostname and establish an encrypted connection.
Certificate authorities issue certificates after applying validation rules. Clients build a certificate chain through appropriate intermediates to a trusted authority, then apply hostname, date, and other required checks.
Domain Validation (DV) checks control of domain names. Organization Validation (OV) adds organizational verification, while Extended Validation (EV) involves additional identity checks under applicable CA requirements. These levels do not inherently change encryption strength or guarantee safe website content.
Subject Alternative Names (SANs) identify covered names. Renewal must maintain the necessary coverage, and a renewed certificate must be installed on the endpoints visitors actually reach. An unexpired certificate can still fail hostname or trust verification.
Both free and paid publicly trusted certificates can support strong HTTPS encryption with suitable configuration. Compare validation, support, and management arrangements separately from price.
Common SSL Error Codes
Use this quick reference to identify a useful starting point. Browser versions, trust stores, network paths, and server configuration affect the result; an error code is general guidance rather than a complete diagnosis.
NET::ERR_CERT_AUTHORITY_INVALID
Certificate authority or chain trust problem.
NET::ERR_CERT_DATE_INVALID
Expired or not-yet-valid certificate, or an incorrect device clock.
NET::ERR_CERT_COMMON_NAME_INVALID
Requested hostname is not covered by the served certificate.
SSL_ERROR_BAD_CERT_DOMAIN
Firefox hostname mismatch.
SEC_ERROR_UNKNOWN_ISSUER
Firefox cannot establish issuer trust.
ERR_SSL_PROTOCOL_ERROR
TLS handshake or protocol-related failure; not necessarily a certificate problem.
Several checks may fail at once. Keep the exact hostname and warning details, and avoid bypassing warnings or disabling certificate verification.
How to Check Your SSL Certificate
1. Enter the affected hostname
Open the SSL Checker and enter the exact domain or subdomain visitors use. The bare domain and www can serve different certificates.
2. Review the certificate details
Compare expiration, issuer, SAN coverage, and reported validation and chain-verification information. Untrusted metadata is not a successful check.
3. Follow the relevant guide
Use the reported issue to select an expiration, trust, hostname, or browser-warning guide. Retest after the responsible configuration is corrected.
Check the certificate presented for your hostname
For a Cloudflare-proxied website, an external check normally sees Cloudflare’s edge certificate rather than the origin certificate. Edge and origin validation are separate connections; investigate the layer that is failing.
Need Help Fixing an SSL Certificate Problem?
SSL issues can involve certificate renewal, hostname coverage, installation, trust chains, or HTTPS server configuration. Hostingcone offers SSL products and website support services for supported situations.
Review Website Repair and its existing service-request process
Review the published service page for current plans, scope, pricing, and purchase or request steps. Work depends on the plan or service purchased, the hosting environment, third-party systems, and required access. Certificate installation or renewal management is not assumed to be included unless confirmed. No outcome, uninterrupted service, or complete security is guaranteed.
More Website Tools and Resources
DNS Lookup Tool
Check public DNS records and selected common hostnames when a domain routes to an unexpected TLS endpoint. This is not a complete DNS zone inventory.
Check Public DNS RecordsDNS Troubleshooting Hub
Explore practical DNS guides for resolution, record configuration, and cached destinations after a change.
Explore DNS TroubleshootingWeb Hosting
Review the hosting environment where your website runs. Hosting-side domain mapping and TLS configuration can affect the served certificate.
Explore Web HostingSSL Troubleshooting FAQs
How do I check if an SSL certificate is valid?
Check the exact hostname and review validity dates, SAN coverage, and trust-chain verification together. Hostingcone’s SSL Checker samples a public endpoint, but it cannot prove that every server or client receives the same result.
Why does my website say the connection is not private?
The browser could not accept the HTTPS connection under its validation rules. Expiration, hostname mismatch, issuer-chain problems, an incorrect device clock, or network interception can contribute. Inspect the exact warning rather than bypassing it.
What happens when an SSL certificate expires?
Clients may reject HTTPS access or show a date warning. Renew or replace the certificate, deploy it to the correct endpoint, and retest. A certificate purchase or successful renewal job alone does not prove live deployment.
Why is my SSL certificate not trusted?
The client may be unable to build a valid chain to an accepted authority, for example because an intermediate is missing or the issuer is private/self-signed. Trust stores and managed-network policies can also differ.
How do I fix a certificate name mismatch?
Compare the requested hostname with SAN entries, confirm DNS routing, and inspect the certificate actually served. Correct missing coverage or virtual-host/SNI selection, then retest each affected hostname. An HTTPS redirect does not fix the initial certificate check.
Is free SSL as secure as paid SSL?
A properly configured free publicly trusted certificate can use modern TLS encryption just like a paid certificate. Validation type, vendor support, and lifecycle management are separate considerations; payment alone does not strengthen encryption.
Can Cloudflare cause SSL errors?
Edge coverage or activation and origin certificate configuration can fail at different layers. A public check normally sees the edge; Full (strict) also requires suitable origin validation. Correct the affected configuration without weakening verification.
Does an SSL certificate protect against malware?
No. It helps authenticate the hostname and protect traffic in transit. Application maintenance, access controls, security measures, and appropriate backups address separate risks.
How can I prevent SSL renewal failures?
Maintain domain-validation access, review automation and deployment logs, and monitor the served certificate early enough to investigate issues. Retest renewed certificates on all intended endpoints. These practices reduce risk but cannot eliminate every failure.
When should I contact my hosting provider?
Ask for help with shared-host certificate selection, installation, failed renewal, missing intermediates, or HTTPS problems after a migration. Share the hostname, warning, time, and recent changes without sending private keys or sensitive credentials in an ordinary message.
Find and Fix SSL Certificate Problems
Check your certificate, explore step-by-step troubleshooting guides, and find the right SSL solution for your website.